Ávalos EI, Katagiri KM, Guerrero IJ

Language: Spanish
References: 13
Page: 7-9
PDF size: 51.62 Kb.

ABSTRACT

With the introduction of the first ceramic brackets in 1986, aesthetic benefits were obtained; but a problem showed up when the adhesive strength that provided these brackets to the enamel was excessive and caused fractures during debonding. Through time, retention mechanisms in the base of the brackets have been created to decrease the adhesive strength, reducing that way enamel damages. The purpose of this study was to compare if the shear bond strengths of the polycrystalline brackets with chemically adhesion are similar to the monocrystalline brackets with mechanically adhesion. All brackets were bonded with Transbond MIP resin following manufactured instructions and using a control group with metallic brackets. All the samples were tested under tangential forces in the Instron machine 1 mm/min; all the results were analyzed with ANOVA of one way with a significance of (p ‹ 0.01) this demonstrate that brackets with chemical adhesion exceeded the adhesive support in comparison with mechanically adhesion group. It may be considered the use of chemical adhesive brackets as we apply this use we increase enamel damages during debonding.

REFERENCES

1. Trace S. Ceramic brackets. Clin Impressions 2001; 10(2) Upland, California: Available URL: http://www.ormco.com

2. Swartz M. Ceramic brackets. J Clin Orthod 1998: 82-8.

3. Odeoggard J. Debonding ceramic brackets. J Clin Orthod 1989: 632-5.

4. Storm E. Debonding ceramic brackets. J Clin Orthod 1990: 91-4.

5. Ghafari J, Skanchy T, Mante F. Shear bond strengths of two ceramic brackets. J Clin Orthod 1992: 491-3.

6. Swartz M. A history lesson inspire sapphire brackets. Clin Impressions 2001; 10(3): Available URL: http://www.ormco.com

7. Dischinger T. Technique clinic debonding ceramic bracket. J Clin Orthod 1990: 321-2.

8. Holt M, Nada R, Duncanson M. Fracture resistance of ceramic brackets during arch wire torsion. Am J Orthod Dent Orthop 1991: 287-93.

9. Gunn S, Powers J. Strength of ceramic brackets in shear and torsion tests. J Clin Orthod 1991: 355-8.

10. Pillips HW. The advent of ceramics editors corner. J Clin Orthod 1998: 69-70.

11. Merril S, Oesterie L, Hermesch C. Ceramic bracket bonding: A comparison of shear, tensil and torsional bond strengths of ceramic brackets. Am J Orthod Dent Orthop 1994: 290-7.

12. Lindauer S, Macon R, Browning H, Rubenstein L, Isaacson R. Ceramic bracket fracture resistance to second order arch wire activations. Am J Orthod Dent Orthop 1994:481-6.

13. Viazis A, Nakajima H, Kelvin J. Shear bond strengths of three new ceramic brackets. J Clin Orthop 1993:539-42.